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Chapter 5: Restart Input file Up Chapter 5: Restart Input file Section 5.2: The Archive Section

## 5.1 Introduction

Users can request FEBio to output a binary dump file. This dump file can be used to restart the analysis from the time point saved in the dump file. The user can restart the analysis either directly from this binary dump file or via a restart input file, which is described in this chapter. See section 2.8.4↑ for more information on how to use the restart feature.
This chapter describes the format of the restart input file. This file is used to redefine some parameters when restarting a previously terminated run and can also be used to extend the analysis. The structure is very similar to the FEBio input file and also uses XML formatting. Since the file uses XML, the first line must be the XML header:
---

The next line contains the root element of the restart file, and has to be:
<febio_restart version="2.0">

The restart file is composed of the following sections. These sections are sub-elements of the febio_restart root element.
Archive define the binary dump file used for restarting.
Control redefine some control parameters.